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Disclosery

Cornerstone Management, Inc.: DUK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Cornerstone Management, Inc. on DUK, newest first. How the timeline and the estimate are built.

Cornerstone Management, Inc. held 2,196 DUK shares at 2026-06-30 per its 13F-HR filed 2026-07-16.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,196 shares
    Change vs previous 13F -150 shares

    0.04% of the 13F portfolio, value $277,998.

    13F-HR 0002085853-26-000754 filed by Cornerstone Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 2,346 shares
    Change vs previous 13F +3 shares

    0.05% of the 13F portfolio, value $307,219.

    13F-HR 0002085853-26-000394 filed by Cornerstone Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 2,343 shares
    Change vs previous 13F +3 shares

    0.04% of the 13F portfolio, value $274,679.

    13F-HR 0002085853-26-000208 filed by Cornerstone Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 2,340 shares
    Change vs previous 13F +3 shares

    0.05% of the 13F portfolio, value $289,612.

    13F-HR 0002085853-25-000066 filed by Cornerstone Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 2,337 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $275,802.

    13F-HR 0001085146-25-004337 filed by Cornerstone Management, Inc.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).